Inventor · Leverkusen, DE

Edwin Ritzer

10Patents
3h-index
12Co-inventors
57Inventor score

Filing activity: Dec 9, 1987 → May 25, 2012

Most-cited inventions

PatentTitleAreaCited byStatus
US5032687A Process for the preparation of cyclopropylamine Chemistry; Metallurgy 13 Expired
US5081288A Process for the preparation of substituted 3,5-dichloro-2,4-difluoro-benzenes Chemistry; Metallurgy 5 Expired
US4868347A Process for obtaining substituted fluorobenzenes Chemistry; Metallurgy 3 Expired
US6350893B1 Method for the production of dibenzyl carbonates Chemistry; Metallurgy 3 Expired
US5756824A Process for the preparation of carbazates Chemistry; Metallurgy 3 Expired
US5068428A Process for the preparation of cyclopropanecarboxamide Chemistry; Metallurgy 3 Expired
US8440719B2 Preservatives based on carboxylic anhydrides Human Necessities 1 Active
US6160160A Process for preparing benzyl carbazates Chemistry; Metallurgy 0 Expired
US8207224B2 Preservatives based on carboxylic anhydrides Human Necessities 0 Active
US9102613B2 Method for producing sorbic anhydride and also use thereof as a preservative in foods Chemistry; Metallurgy 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.